Which of the following statements is false for a particle moving in a circle with a constant angular speed
The velocity vector is tangent to the circle
The acceleration vector is tangent to the circle
The acceleration vector points to the centre of the circle
The velocity and acceleration vectors are perpendicular to each other
A stone tied to the end of a string $80\; cm$ long is whirled in a horizontal circle with a constant speed. If the stone makes $14$ revolutions in $25\; s$, what is the magnitude and direction of acceleration of the stone ?
A particle is moving in a circle of radius $r$ having centre at $O$, with a constant speed $v$. The magnitude of change in velocity in moving from $A$ to $B$ is
If a particle covers half the circle of radius R with constant speed then
A particle moves so that its position vector is given by $\overrightarrow {\;r} = cos\omega t\,\hat x + sin\omega t\,\hat y$ , where $\omega$ is a constant. Which of the following is true?
If the frequency of an object in uniform circular motion is doubled, its acceleration becomes